#include "Test3.h"
#include <QDebug>

Test3::Test3(int x, QObject *parent)
    :Test2(x, parent)  //因为Test3是继承Test2的，所以这里是初始化Test2!
{                      //也是初始化列表中调用构造函数！

}

Test3::~Test3()
{
    qDebug() << "deleting Test3... ";
}
